Figure 1. Diagnostic Form
Follow these procedures to access the Electronic Service Tool (EST) — Engine Off Tests. Access Diagnostic Codes menu in the EST and clear all fault codes before performing the Engine Off Tests. For a reproduction of the applicable portion of the diagnostic form, see Figure
“Diagnostic Form”
.
Section 10.8.1
Purpose
The EST Tool — Engine Off Tests are used to determine if there are any electrical malfunctions that can be detected by the ECM Output Circuit Check self test.
Section 10.8.2
Test Procedure
Access the Engine Off Tests in the Diagnostic Tests section of the EST.
Press the FUNC key repeatedly, until the main menu appears on the screen. See Figure
“MPSI Menu”
.
Figure 2. MPSI Menu
Next, select the Diagnostic Tests menu by pressing the ↓ key until DIAGNOSTIC TESTS is displayed on the screen. Press enter to make this selection. See Figure
“Navpak Menu”
.
Figure 3. Navpak Menu
Press the ↓ key until ENGINE OFF TESTS is displayed on the screen. At this point, press enter. See Figure
“Diagnostic Tests Menu”
.
Figure 4. Diagnostic Tests Menu
After the enter key is pressed, the EST will command the ECM to perform an Output Circuit Check self test.
When the test is complete, the screen will display the number of faults found in the self test. If there are any additional faults found, press enter and the faults will be displayed. Press the ↓ key to access any additional faults. The test is repeated by selecting STANDARD TEST under the Engine Off Tests menu. Only new faults found will be displayed as Faults Found.
Note: To repeat Engine Off Tests, select STANDARD TEST in the Engine Off Test menu.
Section 10.8.3
Possible Causes
The following are possible causes for the hard start/no start condition:
- Defective electrical components or circuitry.
- Injection Pressure Regulator (IPR) output circuit check fault.
Section 10.8.4
Tools Required
Pro-Link 9000, J 38500–100
.
Section 10.8.5
Supplemental Diagnostics
If fault codes are set, refer to the Electronic Diagnostic Form; refer to “10.1 Introduction”
, and fault code diagnostics.
| Series 40E Troubleshooting Manual – 6SE241 |
| Generated on 10-13-2008 |